Rotary valve.



Patented Mar. 9, 1915.

2 SHEETSSHEET l K V I4 m *4 $25 f 15 :-28 {5 I i i ROURK.

Y VALVE. APPL ILED DEG,13, 1913. 1

1,131,089, Patented Mar.9, 1915.

2 SHEETS-SHEET 2 Bridgeport, in the county of Fairfield and- I JOSEPH 1). ROURK, 0F BRIDGEPORT, CONNECTICUT.

ROTARY, VALVE.

Specification of Letters Patent.

Patented Mans, 1915.

Application filed December 13, 1913. Serial No. 806,392.

To all whom it may concern 7 Be it known that I, JOSEPH D. BO'URK, a citizen of the United States, residing at State of Connecticut, have invented certain new and useful Improvements in Rotary Valves, of which the following is a specification.

This invention relates to improvements in valves, and more particularly to valves of that character known as rotary valves, the object of the invention being to provide an improved valve of this character for use 1n connection with internal combustion engines, steam and water'pumps, etc., for the admission and exhaust of liquids, gases and exhaust vapors, and to provide improved means for rotating said valve by means of the reciprocations of the piston or other reciprocating part of the engine or pump.

In the drawings accompanying and forming part of this specification, Figure 1 s a sectional side view of the cylinder and part of the crank case of a water-cooled'internal combustion engine provided with my improved rotaryvalve, the latter being shown in side elevation; Fig. 2 is a horizontal sectional view taken on line 22, Fig. 1, and showing the passage or channel through the valve head in register with the cylinder opening for the admission of gas into said cylinder; Fig. 3 is a sectional view of the valve stem and showing its connection with the piston of the engine, said piston being shown broken away; and Fig. 4 is a sectional view of the valve stem taken online 44, Fig. 1. I I

Similar characters of reference indicate corresponding parts in the different figures of the drawings.

In the present instance the improved rotary valve is shown in connectlon with an internal combustion engine, the cyllnder 2 of which is suitably mounted on the crank case 3 and is provided with a water jacket 4. In a lateral extension 5 of the cylinder are! located an inlet port 6 and an outletport 7, both of which are in"communication with a port or passageway 8 leading into the cyllnder, such cylinder having the usual piston 9, piston rod 10 and crank pin 11 for connection with the crank shaft. Within the lateral extension 5 of the cylinder, at the juncture point of the ports 6, 7 and 8, is located a valve seat for the reception of this improved rotary valve, which comprises in the present instance a valve head 12, shown herein as of conical or tapered formation, which valve head is provided with a port or channel 13 therethrough so formedthat when the valve is rotated to a certain position the port 13 therein will communicate with the inlet 1 port 5 and the port 8 leading to placed in communication with the cylinder, and when the valve is rotatedto another position the port 6will be closed and the port 8,

the outlet port 7, and when the valve is rotated tostill j another position all three of the ports 6, 7

and 8 will be closed. The valve head 12 is provided with a stem or extension 14 having an enlarged cylindrical portion 15, provided with a plurality of lengthwise extending grooves 16, four being shown in the present instance, the alternate grooves being slightly splral 1n opposite directions so that the end of a preceding groove merges with the beginning of the next succeeding groove, thereby completely encircling the valve stem 15.

The crank case 3 is provided with an opening 17 for receiving the end of the valve stem 15 and closely encircling the same.

For the purpose of permitting the ad ustment of the valve head to its seat and thereby take up any wear that may occur,

and also to provide a bearing for the end of the 'valve stem, the crankcase '3 is provided with a bracket 18 projecting inwardly thereof a suitable distance below the opening 17, said bracket having an upturned end 19. On this bracket 18 is mounted a pair of wedge shaped members 20 and 21, placed one on top of the other, the upper member 21 being reversed and having its wedge face placed adjacent to the wedge face of the member 20 and provided in its opposite side with a suitable bearing for the end 22 of the valve stem 15. A set screw 23 is threaded in an opening in the side of the crank case directly opposite the thicker end of the member 20, with its end in contact with such member, I and by turning this screw, as will be readily seen, the valve head can be adjusted to take up any wear between v i it and its seat.

For the purpose of rotating the valve, a

bar or rod 24 is provided, one end thereof passing through a slot 25 extending length wise of the cylinder and securely fastened to the end of the piston, as at 26, for reciprocation therewith. This bar 24 is provided just outside of the cylinderwall, with an I enlarged portion or shoulder 27, and the outer edges of the slot 25 are suitably rabbeted,.as at 28, to receive such shoulder and form a guideway therefor during its reciprocatory movements with. the piston, thereby preventing any side thrust to the piston. The opposite end of the rod 24 is of yoke formation, as shown at'29 in Fig. 3, and partly encircles the valve stem 15. Each end of the yokeis adapted to receive a stud 30, having a roller 31 mounted thereon in position to engage one of the grooves 16 in the valve stem 15, thereby'to rotate the valve on the reciprocation of the piston. Between each of the rollers 31 and the end of the yoke 29 carrying the same is a coiled spring 82, and the grooves 16 are so formed that the beginning of each. succeeding.

groove is deeper than the end of the preceding groove, in other words the bottoms of the grooves are inclined so that each groove is deeper at its beginning than at its end, and therefore as the reciprocation of of the valve stem, and brings the channel or port 13 of the valve head into. communication with the port 8 in the cylinder and the inlet port 6, thus admitting gas from the carbureter (not shown), into the cylinder. On the next stroke of the piston the valve is rotated one fourth of a revolution, and this shuts off communication between the port 8 and the inlet port 6,.and the port 8 remains closed during the next two reciprocations of the piston, during which time compression and ignition is taking, place within the cylinder, and on the next or fourth reciprocation of the piston the valve is rotated so as to bring the port-.13 into position to communicate with the port8 and the outlet port 7 which completes the rotation of the valve. On the next stroke of the piston the outlet portis closed and the inlet ort a ain brou ht into communication with I D C) the port 8, and so on. It will thus be seen that while the rotation of the valve is continuously in the same .direction,that is, there is no backward movement,such rotation is intermittent, since at the end of each stroke .of the piston there is a certain period during which the valve is stationary until the piston has advanced sufliciently far to bring the rollers into operative engagement with the sides of the next succeeding pair of grooves, thereby affording sufiicient time for the explosive gas to enter the cylinder and the proper exhaustion thereof:

after explosion when the port 13 is in; communication with the ports 6 and 7 respectively.

' It is to be understood that while I have shown this improved valve arranged for 1 use iirconnection with an internal eombuse tion engine, it maybe adapted for'many. other purposes, such. as in connection with.

steam or water pumps 1 for the admission and outlet of gases -andliquids, and-while I have shown the piston as the most conven- 1 lent instrument for :caus1ng;the rotation'of" the-valve I do not confine myself to this means of 1'otation,but the valve maybe rotated by connection with any reciprocating part. It is also to be understood thatthedetails of construction may be variedto suit the different purposes to which it maybe put without departing from the spirit and scope of this invention.

I claim as my invention:

1. The combination with a cylinder. and a reciprocatory member, of :a rotary valve located outside'of said cylinder and having astem substantially parallel with said reciprocatory member, and meansreciprocatingwith said reciprocatory memberyandz cooperating with said valve stem for rotating.

said valve on the reciprocation: of the re. clprocatory member.

2. Thecombination with a cylinder hav ing a reciprocatory'piston therein and alateral extension. forming a valveseat, of: a rotary valve located in said seat and having an ciprocatory piston'in said cylinder, and con necting; means extending. through the side wall of said cylinder and adapted toimpart rotary motion to said valve'on the reciprocation of said piston.:-, v

a. The combination with a cylinder having a lengthwiseextendingslot and provided with means for the reception of a valve seat, and a reciprocatory piston withf in said cylinder, of rotary valve comprising a head located in said seat, a valve stemprovided with a plurality .of oppositely ex? tending spiral: grooves, and a rodisecured tosaid piston and extending through the slot in said cylinder and havinga projection adapted to entersaid grooves thereby to rotate the valve on the reciprocation of said piston.

5. The combination with a cylinder zhav-' inga lengthwise extending slot; and prolit) vided with means for the reception of a; valve seat, of a rotary valve located in said seat, and adapted to close said port, a valve stem connected to said valve and provided with a plurality of oppositely extending spiral grooves, a reciprocatory pistonin said cylinder, and a rod connected to said piston and extending through the slot in said cylinder and having at its opposite end a yokeshaped member provided with rollers 'for engaging a pair 'otsaidgrooves thereby to rotate said valveon piston. I a a 6. The combination with a cylinder having a lengthwise extending slot, and provided with means for the reception of; a valve seat, of a rotary valve located in saidv seat, a valve stem connected to' said valve and provided with a plurality of oppositely extending spiral grooves, a reciprocatory pistonin said cylinder, and arod connected to said piston and extending through the slot in saidcylinder and having at its opposite end a yoke-shaped member provided withrollers for engaging a pair of said grooves thereby to rotate said valve on the reciprocation of said piston, each of said grooves being deeper at one end than'at the other. 7 c I 'c 7 The combination with a cylinder having a reciprocatory piston therein and pro{ vided with means for the reception ofa valve seat, of a rotary valve located in said seat and provided with a solid stem, an adjustable bearing for the opposite end of said stem from said valve, and connecting means between said piston and valve stem for rotating the latter on the reciprocation of said piston, said connecting means extending through the side wall of the cylinder.

8. The combination with a cylinder having a reciprocatory piston therein, of a valve -located outside of said cylinder and having a part thereof provided with grooves, and reciprocating means connected with the piston and having a part engaging said grooves for operating the valve on the reciprocation of the piston.

9. The combination with a cylinder having a lengthwise extending slot and provided with means for the reception of a valve seat, and a reciprocatory piston witha. in said cylinder, of a rotary valve having an extending solid stem provided with oppositely extending spiral grooves, an adjustable wedge-shaped bearing for the end of said stem, a connecting member extending through said slot and having one end secured to said'piston and itsopposite end bifurcated to embrace said stem and a spring pressed roller on'each arm of said bifurcated end for engagement withvone of said grooves. p a 7 10. The combination with a cylinder having a lengthwise extending slot and prothe reciprocation of said vided with means for the reception of .a

cured't o said piston .and its opposite end in engagement with-one of said grooves for imparting motiongto said valve on the reciprocationof said piston. 1

llnThe combination with a cylinder having a reciprocatory piston therein, of a rotary, valve located outside of said cylinder and having a part thereof provided-with catingjmeans connected with a "part-of said ,pistonand having a partengaging saidgrooves for rotating the valve .on the re- 1 i .85 P and a reciprocatory piston w1th1n sald casciprocation of the piston. c

12. The combination with a piston ing, of a rotary valve outside of said casing and located at one side of said piston, and 'means projecting through saidcasing and movable with the piston andhaving con-- i lengthwise extending grooves, and recipro-' nection with the rotary valve for rotating 13. The combinationwith a piston casing and a reciprocatory piston within said casing, of a rotary valve outside of said casing and located at one side of said piston,

, said valve on the reciprocation of the piston.

and means projecting from said valve transpiston for rotating said valve on the -reciprocation of the piston. I a

1st. The combination with a casing hava reciprocatory piston within said cylinder and an axially movable valve in said seat,

.versely of the casing and movable with the 7 mg a piston cylinderand a-valveseat, of

said valve having a stem located in parallelism with the piston and outside of the cylinder, and reciprocatory, non-rotatable means reciprocable'with the piston and having connection with said stem for turningthe valve axially in its seat. v V, r

15. The combination with a casing having a piston cylinder and a valve seat, of a reciprocatory piston within said cylinderand an axially movable valve in said seat, said valve having a stem located in parallelism with the piston and outside of the cylinder, and reciprocatory, non-rotatable means reciprocable with the piston, said a valve'located outside of said cylinder for controlling the intake and exhaust gases,

. the valve embodying an extension provided with cam grooves, together with means actuated by the piston and engaging a the means and stem having one grooves and the 1 a grooves whereby the reciprocating movement of the .piston imparts a turning movement to'the valve.

17. .An explosiveengine comprising a cylinder havinga recess in itsside wall, with a revoluble valve for controlling the intake andexhaustof gases and havinga stem, a member carried by the piston passing through said recess and engaging saidstern, whereby the reciprocating piston imparts an intermittently turning movement to the. valve during operation or the mechanism.

18. A11 explosive engine comprising a power cylinder havinga recess therein, the piston of the cylinder being provided with a laterally: extending member passing through the recess, a valve for controlling the intake and exhaust of gases, said valve being provided with an extension having Izigzag grooves engaging said laterally extendingmember, whereby a reciprocating movement of the piston imparts 'an intermittently turning movement to said valve. 19. An explosive engine embodying a powercylinder witha reciprocating piston- \gas therefrom andioperatively connected with the piston independently of said driven element, the movement of the piston'imparting a turning gmovement=to the said valve element.-

T 20. An explosive engine comprising a power cylinder having a reciprocating piston therein, a power element driven by the piston, the cylinder beingjprovided with a port, a revoluble valve at one side of the cylinder and having openings therein adapted to register at determined intervals with said port, said valve being in communication with a source of supply and a medium to receive the exhaustat determined intervals, and means independent of said power element engaging the piston and also engaging said valve whereby the movement of the. piston imparts independent movement to'said valve.

1 21. An explosive engine comprising a power cylinder, the piston of the cylinder being provided with a laterally extending member, a valve at one side of the cylinder for controlling the lntake and exhaust of gases, said valve having a longitudinal extension, provided with zig-zag grooves in which. the said laterally extending member engages, whereby the reciprocation of the "carried by the piston passing through said recess and engaging the stem-of said valve,

whereby thereciprocation of the piston impartsa turning movement to said-valve during operation of the engine; I

23. The combination of" a power cylinder having a piston reciprocatingtherein, a

valve for controlling the intake and exhaust and engaging the said Igroove, whereby the 5 back-and-i'orth movement of the piston imparts a turning'movement'to the valve;

24, An explosive engineembodying a power-cylinder having ;a piston therein, a power;element driven bythe piston, and a;-

valve at one side of the cylinder and com.-

gases therefrom, said valve being operatively connected with the piston independently of said driven element, toactuate said valve.

25. The comblnation with a cylmderhavinga reclprocatory'p ston therein, of avalve ,manding, communication; with the cylinder I and controlling 'thea-dmission of the charge thereto and the exhaust of the explosiveat: one side of the cylinder and having an.

extension thereof provided with grooves-, re-

ciprocating means connected with the pis-.

ton and having'a part engagingsaidgrooves for operating the valve on the reciprocation: J

of the piston, and means for directing the travelof sa1d groove-engaging part from.

one groove into thenext succeeding groove.

26. The combination Vwitha cylinder hav-' at one side of the cylinder'and having. a stem provided with grooves, rec1procat1ng- :means connected with the piston and having" a part engaging said grooves for operating the valve onthe reciprocation of the piston,

and cooperating means carried by' said grooves and groove-engaging part for dis recting the travel of'thelatter from one groove into the next succeeding groove;

27. Tl1e combination with a cylinder having a reciprocatory piston therein, of a valve havin a stem rovided with rooves the b 23 7 end of :each groove adjacent "to the end- %of its precedingygroove being deeper than the opposite endyreciprocating means connected with the piston and havinga part engaging said grooves for operating the valve on the reciprocation oit the piston, and a spring:

carried by said groove-engaging; part for pressing the latter into vthe deeper end mot each. succeeding groove.

28. The combination witha cylinder havi ing a lengthwiseextending slot and'proseat, a valve stem connected to said valve and provided with a plurality of oppositely extending spiral grooves, a reoiprocatory;

piston in said cylinder, a rod connected to said piston and extending through the slot in said cylinder and having at its opposite end a yoke-shaped member provided with rollers for engaging a pair of said grooves thereby to rotate said valve on the reciprocation of said piston, and cooperating means carried by said grooves and yoke-shaped member for directing the travel of said rollers from one pair of grooves into the next succeeding pair.

29. The combination with a cylinder having a lengthwise extending slot and provided with means for the reception of a valve seat, of a rotary valve located in said seat, a valve stem connected to said valve and provided with a plurality of oppositely extending spiral grooves, the end of each groove adjacent to the end of its preceding groove being deeper than the opposite end, a reciprocatory piston in said cylinder, a rod connected to said piston and extending through the slot in said cylinder and having at its opposite end a yoke-shaped member provided with rollers for engaging a pair of said grooves thereby to rotate said valve on the reciprocation of said piston, and springs carried between said yokeshaped member and rollers for pressing the latter into the deeper ends of each succeeding pair of grooves.

Signed at Bridgeport, in the county of Fairfield and State of Connecticut, this 9th day of December, 1913.

JOSEPH D. ROURK.

Witnesses:

GEO. H. PRATT, ETHEL M. KEEFE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of latents,

Wa gton, Q! 

